Common Contracts

Grupo Aeroportuario del Centro Norte, S.A.B. de C.V. 36,000,000 Series B Shares (without par value) of Grupo Aeroportuario del Centro Norte, S.A.B. de C.V. directly or in the form of American Depositary Shares UNDERWRITING AGREEMENT

Underwriting Agreement • July 16th, 2013 • Central North Airport Group • Airports, flying fields & airport terminal services • New York

• Contract Type
  Underwriting Agreement
• Filed
  July 16th, 2013
• Company
  Central North Airport Group
• Industry
  Airports, flying fields & airport terminal services
• Jurisdiction
  New York

shares, without par value, of the Company (the “Series B Shares”), directly or in the form of American Depositary Shares (the “ADSs”). The Series B Shares, including any ADSs representing such Series B Shares, to be purchased by the Underwriters as set forth in this Underwriting Agreement (the “Agreement”) are hereinafter called, collectively, the “International Firm Shares.” The Selling Shareholder also proposes to sell to the Underwriters, at the option of the Underwriters and as set forth in this Agreement, an aggregate of not more than an additional 5,400,000 Series B Shares directly or in the form of ADSs (the “International Option Shares,” and together with the International Firm Shares, hereinafter called the “International Shares”). The ADSs are to be evidenced by American Depositary Receipts (the “ADRs”) issued pursuant to a Deposit Agreement, effective as of December 27, 2012 (the “Deposit Agreement”), among the Company, JPMorgan Chase Bank, N.A., as Depositary (the “Deposita

Grupo Aeroportuario del Centro Norte, S.A.B. de C.V. [—] Series B Shares (without par value) of Grupo Aeroportuario del Centro Norte, S.A.B. de C.V. directly or in the form of American Depositary Shares UNDERWRITING AGREEMENT

Underwriting Agreement • May 30th, 2013 • Central North Airport Group • Airports, flying fields & airport terminal services • New York

• Contract Type
  Underwriting Agreement
• Filed
  May 30th, 2013
• Company
  Central North Airport Group
• Industry
  Airports, flying fields & airport terminal services
• Jurisdiction
  New York

The shareholder named in Schedule III hereto (the “Selling Shareholder”) of Grupo Aeroportuario del Centro Norte, S.A.B. de C.V., a sociedad anónima bursátil de capital variable (the “Company”) organized under the laws of the United Mexican States (“Mexico”) proposes to sell to the Underwriters named in Schedule II hereto (collectively, the “Underwriters” which term shall also include any underwriter substituted as hereinafter provided in Section 11 hereof), for whom [—] (the “Representative”) is acting as representative, an aggregate of [—] outstanding Series B shares, without par value, of the Company (the “Series B Shares”), directly or in the form of American Depositary Shares (the “ADSs”). The Series B Shares, including any ADSs representing such Series B Shares, to be purchased by the Underwriters as set forth in this Underwriting Agreement (the “Agreement”) are hereinafter called, collectively, the “International Firm Shares.” [The Selling Shareholder also proposes to sell to th